Diversity Index with Shannon Method
Use counts for categories compare abundance diversity and how even dem be.
Your numbers
Shannon diversity value H
Use consistent units. Result follow the assumptions wey you enter.
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Formula
Use H = −Σpᵢln(pᵢ) and J = H/ln(S). pᵢ na each positive category count divided by total count, and S na category count. ln na natural logarithm. For only one category, di convention na J = 1.
Use counts for categories compare abundance diversity and how even dem be.
Example wey show the calculation
- Category counts wey positive
- 10, 10, 10
- Shannon diversity value H
- 1.09861228867
- How even the categories be
- 1
- Effective number of categories
- 3
Where e fit work and limits
Use consistent units. Result follow the assumptions wey you enter.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: ce2e116d5108 · Example don get check: